| 摘要 |
The invention concerns a microwave heating device designed for use in an oven for cooking food. Said device comprises a microwave generator (1) and means for diffusing (2) said energy in a working zone (3). The invention is characterised in that at least a patch antenna (10) adapted to sense the microwaves is arranged in the working zone. Said antenna is connected to an electromagnetic wave propagating line (11) of length L to ensure propagation of the microwaves sensed by the antenna, and whereof the end (12) is adapted to reflect part of said waves towards the antenna. The antenna (10) then retransmits said reflected waves into the chamber (26) with a specific phase shift determined by the length L of the propagation line.
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